Kicker Motorcycle 5.25 Inch Speaker with Kicker 100 watt Power sports amplifier. Weather proof speakers tried and tested in the toughest environments. 5-1/4" PowerSports Harley Davidson Motorcycle Speakers System Conformal-coated circuit board and stainless-steel hardware for weather resistance Two-ohm stable, 100 watt amp Selectable 100 Hz or 250 Hz, 24 dB/octave high-pass filter